Microclimatic studies on some methods of irrigation in the rice-field. (4)

概要

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In the plain district of Kyushu, the climate is almost subtropical in summer season.For the paddy rice, low field-temperature depending on continuous irrigation with running-water is more favorable than high temperature based on stagnant water.At the beginning of running-water irrigation, the soil-temperature instantly follows the water-temperature and becomes lower, while it continues lower for a week or so after the stopping of this irrigation, compared with that in the field with stagnant water.Accordingly, the running-water irrigation should be ended some days before the artificial control of temperature becomes unnecessary.
日本農業気象学会の論文